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Gillen JH, Moore CA, Vuong M, Shajahan J, Anstey MR, Alston JR, Bejger CM. Synthesis and disassembly of an organometallic polymer comprising redox-active Co 4S 4 clusters and Janus biscarbene linkers. Chem Commun (Camb) 2022; 58:4885-4888. [PMID: 35352711 DOI: 10.1039/d2cc00953f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Here, we show for the first time that main-chain organometallic polymers (MCOPs) can be prepared from Janus N-heterocyclic carbene (NHC) linkers and polynuclear cluster nodes. The crosslinked framework Co4S4-MCOP is synthesized via ligand displacement reactions and undergoes reversible electron transfer in the solid state. Discrete molecular cluster species can be excised from the framework by digesting the solid in solutions of excess monocarbene. Finally, we demonstrate a synthetic route to monodisperse framework particles via coordination modulation.
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Affiliation(s)
- Jonathan H Gillen
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA.
| | - Connor A Moore
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA.
| | - My Vuong
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA.
| | - Juvairia Shajahan
- The Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC 27401, USA
| | | | - Jeffrey R Alston
- The Joint School of Nanoscience and Nanoengineering, North Carolina A&T State University, Greensboro, NC 27401, USA
| | - Christopher M Bejger
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA.
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Burmakina GV, Verpekin VV, Maksimov NG, Zimonin DV, Piryazev DA, Chudin OS, Rubaylo AI. Electrochemically induced transformations of bi- and trinuclear heterometallic vinylidene complexes containing Re, Pd and Fe. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.04.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Gushchin AL, Laricheva YA, Abramov PA, Virovets AV, Vicent C, Sokolov MN, Llusar R. Homoleptic Molybdenum Cluster Sulfides Functionalized with Noninnocent Diimine Ligands: Synthesis, Structure, and Redox Behavior. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402343] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Artem L. Gushchin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentyeva 3, 630090 Novosibirsk, Russia, http://www.niic.nsc.ru
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Yuliya A. Laricheva
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentyeva 3, 630090 Novosibirsk, Russia, http://www.niic.nsc.ru
| | - Pavel A. Abramov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentyeva 3, 630090 Novosibirsk, Russia, http://www.niic.nsc.ru
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Alexander V. Virovets
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentyeva 3, 630090 Novosibirsk, Russia, http://www.niic.nsc.ru
| | - Cristian Vicent
- Serveis Centrals d'Instrumentació Cientifica, Universitat Jaume I, Av. Sos Baynat s/n, 12071 Castelló, Spain
| | - Maxim N. Sokolov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Pr. Lavrentyeva 3, 630090 Novosibirsk, Russia, http://www.niic.nsc.ru
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Rosa Llusar
- Dept. de Química Física i Analítica, Universitat Jaume I, Av. Sos Baynat s/n, 12071 Castelló, Spain
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Duval S, Marrot J, Simonnet-Jégat C, Mbomekallé IM, Sokolov M, Cadot E. {AsW9O33}–{Mo3S4} based polyoxometalates including a metal–metal bond with Pd or Ni. Synthesis, structure and studies in solution. Dalton Trans 2012; 41:3174-84. [DOI: 10.1039/c2dt11420h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Zhao Q, Harris TD, Betley TA. [(HL)2Fe6(NCMe)m]n+ (m = 0, 2, 4, 6; n = −1, 0, 1, 2, 3, 4, 6): An Electron-Transfer Series Featuring Octahedral Fe6 Clusters Supported by a Hexaamide Ligand Platform. J Am Chem Soc 2011; 133:8293-306. [DOI: 10.1021/ja2015845] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Qinliang Zhao
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge Massachusetts 02138, United States
| | - T. David Harris
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge Massachusetts 02138, United States
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge Massachusetts 02138, United States
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Baran P, Boca R, Chakraborty I, Giapintzakis J, Herchel R, Huang Q, McGrady JE, Raptis RG, Sanakis YO, Simopouloso A. Synthesis, characterization, and study of octanuclear iron-oxo clusters containing a redox-active Fe4O4-cubane core. Inorg Chem 2007; 47:645-55. [PMID: 18078337 DOI: 10.1021/ic7020337] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A one-pot synthetic procedure yields the octanuclear Fe(III) complexes Fe(8)(micro(4-)O)(4)(micro-pz(*))(12)X(40, where X = Cl and pz(*) = pyrazolate anion (pz = C(3)H(3)N(2)-) (1), 4-Cl-pz (2), and 4-Me-pz (3) or X = Br and pz(*) = pz (4). The crystal structures of complexes 1-4, determined by X-ray diffraction, show an Fe(4)O(4)-cubane core encapsulated in a shell composed of four interwoven Fe(micro-pz(*))(3)X units. Complexes 1-4 have been characterized by 1H NMR, infrared, and Raman spectroscopies. Mössbauer spectroscopic analysis distinguishes the cubane and outer Fe(III) centers by their different isomer shift and quadrupole splitting values. Electrochemical analyses by cyclic voltammetry show four consecutive, closely spaced, reversible reduction processes for each of the four complexes. Magnetic susceptibility studies, corroborated by density functional theory calculations, reveal weak antiferromagnetic coupling among the four cubane Fe centers and strong antiferromagnetic coupling between cubane and outer Fe atoms of 1. The structural similarity between the antiferromagnetic Fe(8)(micro(4-)O)(4) core of 1-4 and the antiferromagnetic units contained in the minerals ferrihydrite and maghemite is demonstrated by X-ray and Mössbauer data.
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Affiliation(s)
- Peter Baran
- Department of Chemistry and the Institute of Functional Nanomaterials, University of Puerto Rico, San Juan, Puerto Rico 00931-3346, USA
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Affiliation(s)
- William E. Geiger
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405
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Femoni C, Iapalucci MC, Kaswalder F, Longoni G, Zacchini S. The possible role of metal carbonyl clusters in nanoscience and nanotechnologies. Coord Chem Rev 2006. [DOI: 10.1016/j.ccr.2006.03.011] [Citation(s) in RCA: 118] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Li M, Ellern A, Espenson JH. Rhenium(V) Complexes with Thiolato and Dithiolato Ligands: Synthesis, Structures, and Monomerization Reactions. Inorg Chem 2005; 44:3690-9. [PMID: 15877453 DOI: 10.1021/ic0501871] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The new compound {(PhS)(2)ReO(mu-SPh)}(2), 1, was synthesized from Re(2)O(7) and PhSH and then used as the synthon for a number of hitherto unknown oxorhenium(V) compounds. Reactions between dithiols and 1 (2:1 ratio) afford {PhSReO(dt)}(2), where the dithiols, dtH(2), are 1,2-ethanedithiol (edtH(2)), 1,3-propanedithiol (pdtH(2)), 1,3-butanedithiol (pdtMeH(2)), 1,2-benzenedithiol (bdtH(2)), 2-(mercaptomethyl)thiophenol (mtpH(2)), and 2-mercaptoethyl sulfide (mesH(2)). Similar reactions carried out with a 3:1 ratio of dtH(2) to 1 afford [(ReO)(2)(dt)(3)], dt = edt, pdt. When NEt(3) was introduced prior to the 3:1 reaction between edtH(2) and 1, a compound containing an anionic complex was isolated, [PPh(4)][ReO(edt)(2)]. The new compounds were characterized analytically, spectroscopically, and crystallographically. The Re-O groups in two of the compounds, 1 and {ReO(mu-SPh)(bdt)}(2), exist in rare anti orientations; the others adopt the more familiar syn geometry, as discussed. Selected monomerization reactions of {PhSReO(dt)}(2) were also carried out: {PhSReO(dt)}(2) + 2L = 2[PhSReO(dt)L]. The rate for L = 4-phenylpyridine is given by v = {k(a)[L] + k(b)[L](2)} x [{PhSReO(dt)}(2)], as it is for the reactions of {MeReO(dt)}(2); for all of these compounds, the reaction proceeds nearly entirely by the third-order pathway. Values of k(b)/L(2) mol(-2) s(-1) at 25.0 degrees C are 5.8 x 10(2) (mtp), 2.97 x 10(3) (pdt), 4.62 x 10(5) (edt), and 3.87 x 10(5) (bdt). The rate law for the reactions of {PhSReO(dt)}(2) with L = PAr(3) is v = k(a)[L]/{1 + kappa[L]} x [{PhSReO(dt)}(2)]. For PPh(3), values at 25.0 degrees C of k(a)/L mol(-1) s(-1) (kappa/L mol(-1)) for {PhSReO(dt)}(2) are 9.64 x 10(-2) (1.87) for mtp, 3.43 x 10(-2) (0.492) for pdt, 1.91 (1.42) for edt, 1.84 x 10(-2) (0.82) for bdt, and 1.14 x 10(3) (10.6) for 1. Mechanisms are proposed that are consistent with the data obtained and with earlier work.
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Affiliation(s)
- Ming Li
- Ames Laboratory and Department of Chemistry, Iowa State University, Ames, 50011, USA
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Herbst K, Zanello P, Corsini M, D'Amelio N, Dahlenburg L, Brorson M. A complete family of isostructural cluster compounds with cubane-like M(3)S(4)M' cores (M = Mo, W; M' = Ni, Pd, Pt): comparative crystallography and electrochemistry. Inorg Chem 2003; 42:974-81. [PMID: 12588128 DOI: 10.1021/ic0205379] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
By reaction of the geometrically incomplete cubane-like clusters [(eta(5)-Cp')(3)Mo(3)S(4))][pts] and [(eta(5)-Cp')(3)W(3)S(4)][pts] (Cp' = methylcyclopentadienyl; pts = p-toluenesulfonate) with group 10 alkene complexes, three new heterobimetallic clusters with cubane-like cluster cores were isolated: [(eta(5)-Cp')(3)W(3)S(4)M'(PPh(3))][pts] ([5][pts], M' = Pd; [6][pts], M' = Pt); [(eta(5)-Cp')(3)Mo(3)S(4)Ni(AsPh(3))][pts] ([7][pts]). The compounds [5][pts]-[7][pts] are completing the extensive series of clusters [(eta(5)-Cp')(3)M(3)S(4)M'(EPh(3))][pts] (M = Mo, W; M' = Ni, Pd, Pt; E = P, As) which allows the consequences of replacing a single type of atom on structural and NMR and UV/vis spectroscopic as well as electrochemical properties to be determined. Single-crystal X-ray structure determinations of [5][pts]-[7][pts] revealed that [5][pts] was not isomorphous to the other members of the series [(eta(5)-Cp')(3)M(3)S(4)M'(EPh(3))][pts] due to distinctly different cell parameters, which in the molecular structure of [5](+) is reflected in a slightly different orientation of the PPh(3) ligand. Electrochemical measurements on the series showed that the Mo-based clusters were more difficult to oxidize than their W-based analogues. The Pd-containing clusters underwent two-electron oxidation processes, whereas the Ni- and Pt-containing clusters underwent two separated one-electron oxidation processes.
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Affiliation(s)
- Konrad Herbst
- Haldor Topsøe A/S, Nymøllevej 55, DK-2800 Lyngby, Denmark.
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Uhrhammer D, Schultz FA. Energetics of Concerted Two-Electron Transfer and Metal−Metal Bond Cleavage in Phosphido-Bridged Molybdenum and Tungsten Carbonyl Complexes. J Phys Chem A 2002. [DOI: 10.1021/jp021557z] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Darrell Uhrhammer
- Department of Chemistry, Indiana University Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202-3274
| | - Franklin A. Schultz
- Department of Chemistry, Indiana University Purdue University Indianapolis, 402 North Blackford Street, Indianapolis, Indiana 46202-3274
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Morneau A, Geiger WE, Richmond MG, Don MJ, Watson WH, Nagl A. Reduction and Oxidation of the Arachno Clusters Fe2(CO)6(μ-S)2PtL2: Characterization of Distinct One- and Two-Electron Transfer Sites in Heteropolynuclear Compounds. Organometallics 2002. [DOI: 10.1021/om010838a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andre Morneau
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, Department of Chemistry, University of North Texas, Denton, Texas 76203, and Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129
| | - William E. Geiger
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, Department of Chemistry, University of North Texas, Denton, Texas 76203, and Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129
| | - Michael G. Richmond
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, Department of Chemistry, University of North Texas, Denton, Texas 76203, and Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129
| | - Ming-Jaw Don
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, Department of Chemistry, University of North Texas, Denton, Texas 76203, and Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129
| | - William H. Watson
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, Department of Chemistry, University of North Texas, Denton, Texas 76203, and Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129
| | - Ante Nagl
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405, Department of Chemistry, University of North Texas, Denton, Texas 76203, and Department of Chemistry, Texas Christian University, Fort Worth, Texas 76129
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Fabrizi De Biani F, Femoni C, Iapalucci MC, Longoni G, Zanello P, Ceriotti A. Redox Behavior of [H(6)(-)(n)()Ni(38)Pt(6)(CO)(48)](n)()(-) (n = 4-6) Anions: A Series of Metal Carbonyl Clusters Displaying Electron-Sink Features. Inorg Chem 1999; 38:3721-3724. [PMID: 11671133 DOI: 10.1021/ic9813516] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An investigation of the chemical and electrochemical redox behavior of the bimetallic [H(6)(-)(n)()Ni(38)Pt(6) (CO)(48)](n)()(-) (n = 4-6) clusters shows that they display electron-sink features encompassing up to six different oxidation states. As a corollary, these studies provide an indirect proof of the presence of hydride atoms where n = 4 and 5. The difference in the formal electrode potentials of consecutive redox couples of both [HNi(38)Pt(6) (CO)(48)](5)(-) and [Ni(38)Pt(6) (CO)(48)](6)(-) is almost constant and amounts on the average to ca. 0.33 and 0.28 V, respectively. Such constancy of DeltaE within each species points out the absence of a well-defined HOMO-LUMO gap in both clusters. Besides, its value is an indication of their semiconductor rather than metallic nature. A plot of the average DeltaE exhibited by the known carbonyl clusters displaying electrochemically reversible multiple redox changes versus their nuclearity suggests that the transition from semiconductor to metallic behavior might occur upon a ca. 50% increase of the today available cluster nuclearities.
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Affiliation(s)
- Fabrizia Fabrizi De Biani
- Dipartimento di Chimica, University of Siena, via A. Moro, 53100 Siena, Italy, Dipartimento di Chimica Fisica ed Inorganica, University of Bologna, viale Risorgimento 4, 40136 Bologna, Italy, and Dipartimento di Chimica Inorganica, Metallorganica ed Analitica, University of Milano, via G. Venezian 21, 20133 Milano, Italy
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Calderoni F, Demartin F, Fabrizi de Biani F, Femoni C, Iapalucci MC, Longoni G, Zanello P. Electron-Sink Behaviour of the Carbonylnickel Clusters [Ni32C6(CO)36]6– and [Ni38C6(CO)42]6–: Synthesis and Characterization of the Anions [Ni32C6(CO)36]n– (n = 5–10) and [Ni38C6(CO)42]n– (n = 5–9) and Crystal Structure of [PPh3Me]6[Ni32C6(CO)36] · 4 MeCN. Eur J Inorg Chem 1999. [DOI: 10.1002/(sici)1099-0682(199904)1999:4<663::aid-ejic663>3.0.co;2-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Clegg W, Feeder N, Martin Castro AM, Nahar S, Raithby PR, Shields GP, Teat SJ. Cluster build-up reactions via the ionic coupling of tetraosmium anions and the [RhCp*(NCMe)3]2+ cation; the crystal and molecular structures of [Os4Rh(μ-H)3(MeCNH)(CO)11(η5-Cp*)], [Os4Rh(μ-H)2(CO)13(η5-Cp*)] and [Os4Rh2(μ-H)2(CO)11(η5-Cp*)2] (Cp*C5Me5). J Organomet Chem 1999. [DOI: 10.1016/s0022-328x(98)00834-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mansour MA, Curtis MD, Kampf JW. Synthesis and Structural Characterization of Tetranuclear, Bimetallic Sulfido Nitrosyl and Carbonyl Clusters of the Type Cp2M2M‘2S3,4Ln (M = Mo, W; M‘ = Fe, Co; L = NO, CO). Organometallics 1997. [DOI: 10.1021/om960724c] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Adnan Mansour
- Department of Chemistry, The Willard H. Dow Laboratory, The University of Michigan, Ann Arbor, Michigan 48109-1055
| | - M. David Curtis
- Department of Chemistry, The Willard H. Dow Laboratory, The University of Michigan, Ann Arbor, Michigan 48109-1055
| | - Jeff W. Kampf
- Department of Chemistry, The Willard H. Dow Laboratory, The University of Michigan, Ann Arbor, Michigan 48109-1055
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A cationic iron(III) porphyrin encapsulated between the layered structure of MoS2. A new approach to the synthesis of an FeMoS system. Inorganica Chim Acta 1997. [DOI: 10.1016/s0020-1693(96)05563-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Goddard CA, Long JR, Holm RH. Synthesis and Characterization of Four Consecutive Members of the Five-Member [Fe(6)S(8)(PEt(3))(6)](n)()(+) (n = 0-4) Cluster Electron Transfer Series. Inorg Chem 1996; 35:4347-4354. [PMID: 11666650 DOI: 10.1021/ic960052i] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The clusters [Fe(6)S(8)(PEt(3))(6)](+,2+) have been shown by other investigators to be formed by the reaction of [Fe(OH(2))(6)](2+) and H(2)S, to contain face-capped octahedral Fe(6)S(8) cores, and to be components of the five-membered electron transfer series [Fe(6)S(8)(PEt(3))(6)](n)()(+) (n = 0-4) estalished electrochemically. We have prepared two additional series members. Reaction of [Fe(6)S(8)(PEt(3))(6)](2+) with iodine in dichloromethane affords [Fe(6)S(8)(PEt(3))(6)](3+), isolated as the perchlorate salt (48%). Reduction of [Fe(6)S(8)(PEt(3))(6)](2+) with Na(Ph(2)CO) in acetonitrile/THF produces the neutral cluster [Fe(6)S(8)(PEt(3))(6)] (65%). The structures of the four clusters with n = 0, 1+, 2+, 3+ were determined at 223 K. The compounds [Fe(6)S(8)(PEt(3))(6)](ClO(4))(3), [Fe(6)S(8)(PEt(3))(6)] crystallize in trigonal space group R&thremacr;c with a = 21.691(4), 16.951(4) Å, c = 23.235(6), 19.369(4) Å, and Z = 6, 3. The compounds [Fe(6)S(8)(PEt(3))(6)](BF(4))(2), [Fe(6)S(8)(PEt(3))(6)](BF(4)).2MeCN were obtained in monoclinic space groups P2(1)/c, C2/c with a = 11.673(3), 16.371(4) Å, b = 20.810(5), 16.796(4) Å, c = 12.438(4), 23.617(7) Å, beta = 96.10(2), 97.98(2) degrees, and Z = 2, 4. [Fe(6)S(8)(PEt(3))(6)](BPh(4))(2) occurred in trigonal space group P&onemacr; with a = 11.792(4) Å, b = 14.350(5) Å, c = 15.536(6) Å, alpha = 115.33(3) degrees, beta = 90.34(3) degrees, gamma = 104.49(3) degrees, and Z = 1. Changes in metric features across the series are slight but indicate increasing population of antibonding Fe(6)S(8) core orbitals upon reduction. Zero-field Mössbauer spectra are consistent with this result, isomer shifts increasing by ca. 0.05 mm/s for each electron added, and indicate a delocalized electronic structure. Magnetic susceptibility measurements together with previously reported results established the ground states S = (3)/(2) (3+), 3 (2+), (7)/(2) (1+), 3 (0). The clusters [Fe(6)S(8)(PEt(3))(6)](n)()(+) possess the structural and electronic features requisite to multisequential electron transfer reactions. This work provides the first example of a cluster type isolated over four consecutive oxidation states. Note is also made of the significance of the [Fe(6)S(8)(PEt(3))(6)](n)()(+) cluster type in the development of iron-sulfur-phosphine cluster chemistry.
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Calderoni F, Demartin F, Iapalucci MC, Laschi F, Longoni G, Zanello P. Synthesis and Chemical and Electrochemical Characterization of Fe-S Carbonyl Clusters. X-ray Crystal Structures of [N(PPh(3))(2)](2)[Fe(5)S(2)(CO)(14)] and [N(PPh(3))(2)](2)[Fe(6)S(6)(CO)(12)]. Inorg Chem 1996; 35:898-905. [PMID: 11666263 DOI: 10.1021/ic950482t] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A reinvestigation of the redox behavior of the [Fe(3)(&mgr;(3)-S)(CO)(9)](2)(-) dianion led to the isolation and characterization of the new [Fe(5)S(2)(CO)(14)](2)(-), as well as the known [Fe(6)S(6)(CO)(12)](2)(-) dianion. As a corollary, new syntheses of the [Fe(3)S(CO)(9)](2)(-) dianion are also reported. The [Fe(5)S(2)(CO)(14)](2)(-) dianion has been obtained by oxidative condensation of [Fe(3)S(CO)(9)](2)(-) induced by tropylium and Ag(I) salts or SCl(2), or more straightforwardly through the reaction of [Fe(4)(CO)(13)](2)(-) with SCl(2). The [Fe(6)S(6)(CO)(12)](2)(-) dianion has been isolated as a byproduct of the synthesis of [Fe(3)S(CO)(9)](2)(-) and [Fe(5)S(2)(CO)(14)](2)(-) or by reaction of [Fe(4)(CO)(13)](2)(-) with elemental sulfur. The structures of [N(PPh(3))(2)](2)[Fe(5)S(2)(CO)(14)] and [N(PPh(3))(2)](2)[Fe(6)S(6)(CO)(12)] were determined by single-crystal X-ray diffraction analyses. Crystal data: for [N(PPh(3))(2)](2)[Fe(5)S(2)(CO)(14)], monoclinic, space group P2(1)/c (No. 14), a = 24.060(5), b = 14.355(6), c = 23.898(13) Å, beta = 90.42(3) degrees, Z = 4; for [N(PPh(3))(2)](2)[Fe(6)S(6)(CO)(12)], monoclinic, space group C2/c (No. 15), a = 34.424(4), b = 14.081(2), c = 19.674(2) Å, beta = 115.72(1) degrees, Z = 4. The new [Fe(5)S(2)(CO)(14)](2)(-) dianion shows a "bow tie" arrangement of the five metal atoms. The two Fe(3) triangles sharing the central Fe atom are not coplanar and show a dihedral angle of 55.08(3) degrees. Each Fe(3) moiety is capped by a triply bridging sulfide ligand. The 14 carbonyl groups are all terminal; two are bonded to the unique central atom and three to each peripheral iron atom. Protonation of the [Fe(5)S(2)(CO)(14)](2)(-) dianion gives reversibly rise to the corresponding [HFe(5)S(2)(CO)(14)](-) monohydride derivative, which shows an (1)H-NMR signal at delta -21.7 ppm. Its further protonation results in decomposition to mixtures of Fe(2)S(2)(CO)(6) and Fe(3)S(2)(CO)(9), rather than formation of the expected H(2)Fe(5)S(2)(CO)(14) dihydride. Exhaustive reduction of [Fe(5)S(2)(CO)(14)](2)(-) with sodium diphenyl ketyl progressively leads to fragmentation into [Fe(3)S(CO)(9)](2)(-) and [Fe(CO)(4)](2)(-), whereas electrochemical, as well as chemical oxidation with silver or tropylium tetrafluoroborate, in dichloromethane, generates the corresponding [Fe(5)S(2)(CO)(14)](-) radical anion which exhibits an ESR signal at g = 2.067 at 200 K. The electrochemical studies also indicated the existence of a subsequent one-electron anodic oxidation which possesses features of chemical reversibility in dichloromethane but not in acetonitrile solution. A reexamination of the electrochemical behavior of the [Fe(3)S(CO)(9)](2)(-) dianion coupled with ESR monitoring enabled the spectroscopic characterization of the [Fe(3)S(CO)(9)](-) radical monoanion and demonstrated its direct involvement in the generation of the [Fe(5)S(2)(CO)(14)](n)()(-) (n = 0, 1, 2) system.
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Affiliation(s)
- Francesca Calderoni
- Dipartimento di Chimica Fisica ed Inorganica, viale Risorgimento 4, 40136 Bologna, Italy, Dipartimento di Chimica Strutturale e Stereochimica Inorganica, via G. Venezian 21, 20133 Milano, Italy, and Dipartimento di Chimica, Pian dei Mantellini 44, 53100 Siena, Italy
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Zanello P, Laschi F, Cinquantini A, Della Pergola R, Garlaschelli L, Cucco M, Demartin F, Spalding TR. The redox behaviour of the cluster anion [Fe4N(CO)12]−. Electron transfer chain catalytic substitution reactions. Crystal structure of [Fe4N(CO)11PPh3)]−. Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(94)04061-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ogo S, Suzuki T, Ozawa Y, Isobe K. A Heterotrimetallic Sulfide Cluster Having a Linear RhIII···WVI···CuIFramework of an Octahedral - Tetrahedral - Trigonal Planar Sequence. CHEM LETT 1994. [DOI: 10.1246/cl.1994.1235] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Bencini A, Midollini S. Some synthetic and theoretical aspects of the chemistry of polynuclear transition-metal complexes. Coord Chem Rev 1992. [DOI: 10.1016/0010-8545(92)80048-v] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Field LD, George AV, Laschi F, Malouf EY, Zanello P. Electrochemistry of acetylide complexes of iron. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83404-6] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ozawa Y, Hayashi Y, Isobe K. Synthesis and Structure of Novel Organometallic Sulfide Cluster [(η5–C5Me5)MWO(μ–S2)(μ–S)2]2(M = Rh, Ir) Containing High-Valent Tungsten Atoms. CHEM LETT 1990. [DOI: 10.1246/cl.1990.249] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Chanon M, Rajzmann M, Chanon F. One electron more, One electron less. What does it change? Activations Induced by electron Transfer. The electron, an activating messenger. Tetrahedron 1990. [DOI: 10.1016/s0040-4020(01)96001-6] [Citation(s) in RCA: 112] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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